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Updated: Dec 26, 2025
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Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
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Local increase of the Curie temperature in Mn/Fe implanted Y3Fe5O12 (YIG)
P B Krastev1, H P Gunnlaugsson2, K Nomura3
1Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 72 Tsarigradsko Chaussee Boulevard, Sofia, 1784, Bulgaria.
Summary
Ion implantation damages Yttrium Iron Garnet (YIG) lattices, altering magnetic properties. Despite reduced magnetic fields, the Curie temperature significantly increased due to lattice distortions.
Area of Science:
- Materials Science
- Solid State Physics
- Nuclear Spectroscopy
Background:
- Yttrium Iron Garnet (Y3Fe5O12, YIG) is a crucial magnetic material.
- Ion implantation is used to modify material properties, but can induce lattice damage.
- Understanding the impact of lattice damage on magnetic properties like Curie temperature is essential.
Purpose of the Study:
- To investigate the effect of ion implantation-induced lattice damage on the Curie temperature of single crystalline YIG.
- To analyze changes in magnetic hyperfine fields and local lattice structure after 57Mn implantation.
Main Methods:
- 57Fe emission Mössbauer Spectroscopy (eMS) was employed to study the YIG sample.
- The sample was implanted with 57Mn.
- Mössbauer spectra were recorded and analyzed across a temperature range of 298 K to 798 K.
Main Results:
- Mössbauer spectra analysis confirmed the presence of high spin Fe3+ ions on both octahedral and tetrahedral sites.
- Implantation-induced lattice damage led to a decrease in the average magnetic hyperfine field values.
- The Curie temperature of the implanted YIG sample was determined to be 651 ± 5 K, significantly higher than bulk YIG (559 K).
Conclusions:
- Lattice damage induced by ion implantation alters the magnetic hyperfine fields in YIG.
- The observed increase in Curie temperature is attributed to lattice damage-induced modifications in spin configurations, likely via FeA-O-FeD distortions.
- Emission Mössbauer Spectroscopy is effective in probing the local environment and magnetic properties of ion-implanted materials.
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